Doctors pointed out a critical difference between left-handed and right-handed: “is threatened by a dangerous illness”

Врачи указали на критическую разницу между левшами и правшами: "грозит опасная болезнь"

Left-handers in danger, scientists were surprised by the new research

Researchers at Oxford University conducted a large-scale neuroimaging and genetic screening. As a result, they found out that the brains of left-handers and right-handers is different.

As it turned out, the matter is not only in the increased connectedness of the speech centers to each other, but in the different gene expression. The latter fact increases the risk of left-handers have schizophrenia, but it lowers the risk of Parkinson’s disease.

As a result of long and painstaking data analysis 400 thousand people in the UK Biobank found that left-handers have increased functional connectivity between functional network of the right speech center and functional network of the left speech-center.

Врачи указали на критическую разницу между левшами и правшами: "грозит опасная болезнь"

Neuroscientists have studied multimodal MRI data packets on the structural and functional features of the brain about 9,000 people. After that, and was able to detect genetic and functional characteristics of left-handed and right-handed people.

In packages of the MRI data was investigated pictures, information on the percentage of gray, white matter thickness gray matter, and nerve paths and communication areas of the brain with each other.

The comparison of the data of right-handers and left-handers revealed that the brain of left-handers is more “dense” when the speech centers in the right and left hemispheres.

Search of associations of genes or GWAS helped to establish — left-handers and right-handers there are differences in four genetic loci, three of which are either genes that encode proteins, and are involved in forming the cytoskeleton of neurons, or sequences that are engaged in “activity” of genes.

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Врачи указали на критическую разницу между левшами и правшами: "грозит опасная болезнь"

Further it was found out that genes MAP2, MAPT, WNT3 and MICB observed in the development of Parkinson’s, Alzheimer’s and schizophrenia.

Remains a mystery, what gives left-handers better connectivity between the speech areas hemispheres, most likely, it indicates a good connection between the hemispheres of the brain as a whole.

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